CCIE R&S Advanced Technologies Class v4.5

Transcript

1	Introduction	0h 43m
2	Using the Cisco Documentation	0h 52m
3	Ethernet Overview, Layer 2 Switchports, Trunking, ISL, 802.1q, DTP	0h 47m
4	VTP, VTP Authentication, VTP Pruning	1h 02m
5	VTP Prune Eligible List, VTP Transparent, VTP Troubleshooting, Trunk Allowed List, Extended VLANs	0h 48m
6	VLAN and VTP Review	0h 19m
7	SVIs, Native Routed Interfaces, Router-on-a-Stick	0h 46m
8	Layer 2 EtherChannel, EtherChannel Load Balancing, Layer 3 EtherChannel	0h 57m
9	802.1q Tunneling, Layer 2 Protocol Tunneling, EtherChannel over 802.1q Tunneling	1h 03m
10	STP Root Bridge Election, STP Root Port Election, STP Designated Port Election, STP Priority, STP Cost, STP Port-Priority	1h 46m
11	STP Review	0h 12m
12	STP Timers, STP PortFast	0h 34m
13	STP UplinkFast	0h 11m
14	STP BackboneFast	0h 12m
15	STP BPDU Filter	0h 13m
16	STP BPDU Guard	0h 11m
17	STP Root Guard	0h 11m
18	STP Loop Guard, Unidirectional Link Detection (UDLD)	0h 11m
19	Multiple Spanning-Tree Protocol (MST)	0h 40m
20	Rapid Spanning-Tree Protocol (RSTP), Rapid-PVST	0h 18m
21	MST with Multiple Regions	0h 33m
22	Flex Links	0h 16m
23	Frame Relay	0h 39m
24	Frame Relay Configuration Part 1	0h 34m
25	Frame Relay Configuration Part 2	0h 41m
26	Frame Relay Switching	0h 27m
27	Back-to-Back Frame Relay	0h 08m
28	Frame-Relay End-to-End Keepalives	0h 18m
29	PPP, PPP PAP Authentication, PPP CHAP Authentication	0h 59m
30	PPPoFR, PPPoE	0h 40m
31	Transparent Bridging, IRB	0h 32m
32	Fallback Bridging	0h 14m
33	IP Routing Overview, Switching Paths, Static Routing	0h 42m
34	Static Routing Examples	0h 25m
35	IP Default-Gateway, IP Default-Network	0h 14m
36	On-Demand Routing (ODR)	0h 07m
37	Floating Static Routes	0h 10m
38	Backup Interface	0h 29m
39	Enhanced Object Tracking, IP SLA, Reliable Static Routing	0h 21m
40	Policy Routing	0h 43m
41	GRE Tunneling, GRE Recursive Routing Errors	0h 27m
42	Reliable Backup Interface with GRE	0h 25m
43	RIP Overview, RIP Versions, RIP Auto-Summary	0h 48m
44	RIP Split-Horizon, RIP Timers	0h 22m
45	RIP Broadcast Updates, IP Directed Broadcast, IP Broadcast-Address, Smurf Attacks, Fraggle Attacks	0h 16m
46	RIP Unicast Updates	0h 03m
47	RIP Offset-List	0h 18m
48	RIP Authentication	0h 11m
49	RIP Summarization	0h 10m
50	Prefix-Lists, RIP Distribute-List Filtering, RIP Administrative Distance Filtering	0h 48m
51	RIP Default Routing, RIP Conditional Default Routing	0h 18m
52	RIP Triggered, RIP Validate Update Source,	0h 12m
53	EIGRP Overview	0h 29m
54	EIGRP Auto-Summary	0h 07m
55	EIGRP Split-Horizon	0h 11m
56	EIGRP Update Types, EIGRP Neighbor, EIGRP Passive-Interface	0h 24m
57	EIGRP Hello-Interval, EIGRP Hold-Time	0h 05m
58	EIGRP Authentication	0h 11m
59	EIGRP Time Based Authentication	0h 25m
60	EIGRP Path Selection, EIGRP Metric Weights, EIGRP Traffic Engineering	0h 47m
61	EIGRP Unequal Cost Load Balancing, EIGRP Variance	0h 19m
62	EIGRP QUERY, EIGRP Summarization, EIGRP Leak-Map	0h 28m
63	EIGRP Stub Router Advertisement	0h 22m
64	EIGRP Default Routing	0h 13m
65	EIGRP Route Filtering	0h 11m
66	EIGRP Router-ID	0h 07m
67	Miscellaneous EIGRP Features	0h 02m
68	OSPF Overview	0h 27m
69	Establishing OSPF Adjacencies, Understanding the OSPF Database	0h 43m
70	OSPF Network Type Broadcast, OSPF DR/BDR Election, OSPF over NBMA, OSPF Network Type Non-Broadcast and Point-to-Multipoint	0h 56m
71	OSPF Network Type Point-to-Point, OSPF Network Type Mismatch	0h 13m
72	OSPF Network Type Point-to-Multipoint Non-Broadcast, OSPF Per Neighbor Cost	0h 17m
73	OSPF Network Type Loopback	0h 02m
74	OSPF Path Selection	0h 27m
75	OSPF Convergence Timers	0h 09m
76	OSPF Authentication	0h 12m
77	OSPF Summarization	0h 32m
78	OSPF Stub Areas, OSPF Totally Stubby Areas, OSPF NSSAs, OSPF Totally NSSAs	0h 40m
79	Controlling OSPF NSSA Redistribution	0h 02m
80	OSPF Type 7 to 5 Translator Election, OSPF LSA Type 3 Filter, OSPF Forwarding Address Suppression	0h 24m
81	Route Redistribution Overview	0h 36m
82	Route Redistribution Configuration & Verification, Connected Redistribution	0h 22m
83	OSPF External Path Selection, TCL PING Scripting	0h 33m
84	Routing Loops Overview, EIGRP Route Loop Prevention	0h 55m
85	Metric Based Routing Loops, Route Tagging	0h 46m
86	Administrative Distance Based Routing Loops, Debug IP Routing, IP Route Profile	0h 58m
87	BGP Overview, BGP Peering Types	0h 51m
88	Establishing BGP Peerings, EBGP Multihop, BGP Neighbor Disable Connected Check, BGP TTL Security	0h 49m
89	BGP 4-Byte ASNs	0h 20m
90	BGP Local AS, BGP Peer Groups	0h 30m
91	BGP Next-Hop Self, BGP Next-Hop Processing	0h 30m
92	BGP Route Reflectors	0h 37m
93	Large Scale BGP Route Reflectors with Clusters	0h 34m
94	BGP Confederation	0h 37m
95	BGP NLRI Advertisements, BGP Network Statement, BGP Redistribution	0h 43m
96	BGP Aggregation, BGP Aggregation & Summary-Only, BGP Aggregation & Unsuppress-Map	0h 46m
97	BGP Origin, BGP Aggregation & AS-Set, BGP Aggregation & Advertise-Map	0h 22m
98	BGP Conditional Route Injection	0h 21m
99	BGP Bestpath Selection, BGP Multipath, BGP Weight	0h 53m
100	BGP Local Preference, BGP Local Preference and Communities, BGP AS-Path Prepending,	0h 30m
101	BGP MED, BGP MED Missing As Worst, BGP Deterministic MED	0h 17m
102	BGP Communites, BGP Regular Expressions	0h 43m
103	BGP Filtering, BGP Convergence Timers, BGP Default Routing, Miscellaneous BGP Features	0h 24m
104	MPLS Overview, MPLS Label Distribution Protocol (LDP)	1h 05m
105	MPLS Tunnels, MPLS Penultimate Hop Popping (PHP)	0h 40m
106	MPLS Layer 3 VPNs Overview, VRF Lite	0h 36m
107	MPLS Layer 3 VPNs and VPNv4 BGP	1h 08m
108	MPLS Layer 3 VPN Verification & Troubleshooting	0h 49m
109	MPLS Layer 3 VPN OSPF PE-CE Routing Overview	0h 06m
110	MPLS Layer 3 VPN OSPF PE-CE Routing Path Selection & Sham-Links	2h 01m
111	MPLS Layer 3 VPN OSPF PE-CE Routing Loop Prevention & Down-Bit, OSPF Capability VRF-Lite	0h 40m
112	IPv6 Overview, IPv6 ICMPv6 ND, IPv6 over NBMA	0h 44m
113	IPv6 Routing Overview, IPv6 Static Routing	0h 28m
114	IPv6 RIPng	0h 20m
115	IPv6 EIGRPv6	0h 09m
116	IPv6 OSPFv3	0h 31m
117	MP-BGP for IPv6	0h 26m
118	IPv6 Tunneling	1h 13m
119	Multicast Overview, IGMP	0h 34m
120	PIM Overview	0h 18m
121	PIM Dense Mode	1h 03m
122	PIM Sparse Mode	0h 30m
123	PIM Sparse Mode Configuration	0h 36m
124	PIM Sparse Mode RPF & RP Troubleshooting	0h 27m
125	Auto-RP, Multicast over GRE Tunnels	0h 53m
126	Bootstrap Router (BSR), Bidirectional PIM, Source Specific Multicast (SSM)	0h 40m
127	MSDP, Anycast RP	0h 27m
128	IPv6 Multicast Routing	0h 24m
129	QoS Overview, IntServ QoS, DiffServ QoS, IP Precedence, DSCP, MQC, HQF	0h 41m
130	MQC Classification	0h 44m
131	FIFO, FQ, WFQ, CBWFQ, HQF	0h 50m
132	LLQ	0h 23m
133	WRED	0h 31m
134	Traffic Shaping, Traffic Policing	0h 40m
135	Frame Relay Traffic Shaping (FRTS)	0h 33m
136	RSVP	0h 07m
137	Catalyst 3560 QoS	1h 00m
138	IOS Security Overview, Access Lists (ACLs)	0h 58m
139	Time Based ACLs, Dynamic ACLs	0h 33m
140	Reflexive ACLs	0h 21m
141	TCP Intercept, Content Based Access Control (CBAC)	0h 34m
142	Zone Based Policy Firewall (ZBPF)	1h 09m
143	AAA, Local Authentication, Local Authorization, Role Based CLI Access	0h 43m
144	Port Security, Static CAM Entries, Storm Control, 802.1X Authentication, PACLs, RACLs, VLAN Access Maps (VACLs)	0h 48m
145	DHCP Snooping, Dynamic ARP Inspection (DAI), IP Source Guard	0h 12m
146	Protected Ports, Private VLANs	0h 25m
147	IP Services Overview, HSRP	1h 10m
148	VRRP, GLBP	0h 28m
149	NAT	0h 42m
150	DHCP, DNS	0h 30m
151	NetFlow	0h 09m
152	WCCP, Miscellaneous IP Services	0h 06m
153	System Management Overview, NTP, NTP Authentication	0h 24m
154	SNMP, RMON	0h 38m
155	Syslog, Telnet, SSH, Banners	0h 21m
156	EEM Scripting, Miscellaneous System Management	0h 26m
Total Duration		81h 42m

Slides - Diagrams

Slides - Introduction

Slides - Ethernet Switching

Slides - Advanced Ethernet Switching

Slides - Frame Relay

Slides - PPP

Slides - Transport Bridging

Slides - Redistribution

Slides - IOS Security

Slides - Layer 2 Security

Slides - IP Services

Slides - System Management

0:00:13	In this section, we're gonna look at how RIP
0:00:20	And this is simply based on a hop count,
0:00:23	where each interface or each device
0:00:28	where 16 is the maximum value.
0:00:32	So, this means that for RIP network end-to-end,
0:00:38	To modify this, we can use the off-set
0:00:43	where we could do this for all routes,
0:00:48	This also can be done inbound as the updates
0:00:55	So first, let's look at what is the default
0:01:00	If we look at our topology here,
0:01:04	let's track the...
0:01:07	VLAN 10 interface that switch 4 is originating.
0:01:11	So, from switch 4, we should see
0:01:15	As we go to switch 2,
0:01:19	switch 2 says that "This destination
0:01:22	Then likewise, from router 5's
0:01:26	from 3's perspective, that is 4.
0:01:31	which means that from switch 3's
0:01:36	So, if we look at switch 3,
0:01:39	and look at the Show IP
0:01:46	which is the...
0:01:50	actually, not 8.8, it would be...
0:01:54	10.10.
0:02:00	It says, "The metric is 5 to reach
0:02:05	Now, there was a question that
0:02:09	"When you send a RIP update, does RIP
0:02:14	or when the receiving router gets it in?"
0:02:17	Now, the way that we could quickly verify this...
0:02:20	would be to look between
0:02:23	Let's say, between switch 1 and switch 3,
0:02:26	and see what they say about the update going
0:02:32	So, on switch 1 and switch 3,
0:02:39	Debug IP RIP.
0:02:40	And specifically, we are gonna look...
0:02:44	for that prefix that is the 155.10.10.0/24.
0:02:54	So, on switch 1, it says that we are...
0:02:58	sending the update out VLAN 67,
0:03:05	As it goes out to router 6,
0:03:11	So now, we need to know,
0:03:14	was it received as 4, or was it received as 5?
0:03:21	So, let's see where...
0:03:25	the updates were received.
0:03:29	So, they're coming in from router 3.
0:03:32	Router 3 says that the hop count
0:03:40	Now, if we look at the routing table of router 3,
0:03:44	and see what does it have installed,
0:03:48	That's gonna tell us whether the value is set
0:03:53	So, if we look at router 3's table,
0:04:05	and Show IP Route 155...
0:04:09	.10.10.0.
0:04:11	Router 3 sees this as a metric of 3.
0:04:14	But since the other end of the link
0:04:23	And you can see, it's kind of hard to
0:04:27	There's so many routes that are
0:04:32	So, this is an outbound update.
0:04:36	I want to see the one that was received.
0:04:44	From router 3.
0:04:46	So, as it came inbound, it was 4.
0:04:50	So, router 3 sent it in the table is 3.
0:04:52	We're receiving it has 4.
0:04:54	Now, I wanna know, when I advertise it,
0:04:58	Or am I advertising it as 5?
0:05:01	So, as the update now goes out
0:05:07	It says that this is a metric of 5.
0:05:09	So, what this shows us is that the router is
0:05:15	not as the prefix is received.
0:05:18	Now, we can increment the hop
0:05:24	if we were to use the offset list.
0:05:26	And we'll see that there's mainly two
0:05:29	We can either use it for the
0:05:33	If we wanted to prefer one path over another,
0:05:36	or we could use it for filtering by setting the
0:05:47	So, if we go above 16, whether this is for
0:05:53	this could not be installed in the RIP database,
0:05:56	which means likewise, it cannot be
0:06:00	So, let's look at this now from a
0:06:04	From...
0:06:06	switch 3's perspective,
0:06:09	let's see how are we actually
0:06:12	So, the prefix in question again is the 155.10.10.0/24.
0:06:19	So, from switch 3, let's do a traceroute and
0:06:27	Well say, Trace 155.10.10.10.
0:06:33	Now, the packets are going from us to switch 1.
0:06:37	To router 3, to router 5.
0:06:40	Then, down towards the final destination.
0:06:42	So, the packets are going here, here,
0:06:49	But let's say now that we want to change this path.
0:06:53	Instead of using the
0:06:56	we want the traffic to go this direction.
0:07:04	So, this means that from router 5's perspective,
0:07:08	when we are advertising this prefix out,
0:07:10	if we set it to be much higher on the frame-relay
0:07:14	versus the point-to-point link to router 4,
0:07:18	then, it should imply that when we
0:07:21	the other devices would prefer to use the
0:07:28	Now, as long as we make sure that
0:07:32	because again, if it gets to 16,
0:07:37	So, on router 5,
0:07:40	let's go under the RIP process,
0:07:43	and apply an offset list.
0:07:46	We can use an access list here if we
0:07:52	networks that we are modifying, in this case,
0:08:01	The metric is gonna be at an outbound.
0:08:04	And I'll add let's say...
0:08:07	10.
0:08:10	As it goes out serial 0/0/0.1234,
0:08:20	Now, once everyone converges,
0:08:23	and it's gonna take a little bit of time here,
0:08:28	Then, we should see that the path
0:08:31	Now, we could potentially speed this
0:08:35	Clear IP Route Star (*).
0:08:37	This is gonna force RIP to do a triggered update,
0:08:40	which means that now, router 5 is
0:08:47	If we now look at the result of this on switch 3,
0:08:51	and look at the Traceroute,
0:08:54	we could see now, actually, there's a
0:09:02	Which eventually will work itself out,
0:09:05	but this is one of the disadvantages
0:09:11	that we have what is known as a "Transient Loop".
0:09:15	So, a Transient Loop is a temporary situation
0:09:19	where the devices on the topology do not
0:09:24	Which is what we had here, because router 4's
0:09:31	So, router 5 was actually learning...
0:09:35	If we look at the topology, router 5 was learning
0:09:44	And the result of that is that the traffic bounces
0:09:51	But eventually, this is gonna settle down and now,
0:09:56	So now, the packets are going
0:10:02	So, they're going this way. Then from
0:10:10	So, we see, we can modify the metric value,
0:10:13	but when we do this most of the time, you're
0:10:18	Unless you flush out all the old
0:10:23	So, if I said Clear IP Route Star (*)
0:10:27	But until that point, then, we're gonna start
0:10:34	If we look at the result to this
0:10:37	in the RIP database of let's say, router 3,
0:10:42	and we Show IP RIP Database.
0:10:46	We should see that we have multiple possible paths
0:10:50	for these different routes now, where
0:10:58	frame-relay, some of them are gonna
0:11:03	So, if we look at that prefix in question,
0:11:06	router 3 says that my current route to this
0:11:09	is via router 1, with a hop count of 5.
0:11:13	If we look at the Debug IP RIP,
0:11:17	we should see the update coming in from router 5
0:11:22	with the added hop values.
0:11:37	So, we can see, we're receiving
0:11:41	All of its routes have the original hop counts.
0:11:44	Plus the offset value added on to that.
0:11:47	So, its whatever 5 had to start with, plus 10.
0:11:49	So, it means that 5 would have seen this ones as 2.
0:11:54	These ones as 1,
0:11:55	these ones as 3, etc.
0:11:58	So, we're not replacing the metric value
0:12:01	we're just adding it on to what normally we
0:12:10	So, likewise, we can see that this is applied to all routes
0:12:14	that router 5 is advertising, because I used
0:12:19	If I were to use an access list here,
0:12:26	Now, we can also use this for filtering.
0:12:29	If we set the metric value so large that certain devices
0:12:40	which means that we can filter routes coming in
0:12:46	And we can also potentially do some sort of
0:12:53	to limit exactly where it is going to be advertised to.
0:12:59	So, let's say from...
0:13:01	switch 3's perspective, we're advertising
0:13:06	I want this to go to switch 1 and to router 6,
0:13:12	and from switch 1 to router 3, but I don't
0:13:19	So, technically, what I can do is
0:13:24	that when the update is received by switch 1,
0:13:28	it is seen with a hop count of 14.
0:13:32	Then, when it's received by router 3 and router 6,
0:13:37	it's seen with a hop count of 15,
0:13:39	which means, once it goes one hop beyond this,
0:13:43	the other neighbors would see it as 16, which is
0:13:51	And let's say we wanna do this just for the VLAN 9,
0:13:59	The first step then would be on switch 3,
0:14:03	We look at the Show IP Route Connected.
0:14:07	This VLAN 9 is 155.10.9.0/24.
0:14:13	Now, since the offset list is only
0:14:19	it means that the RIP process cannot
0:14:25	that have the same prefix, but different lengths.
0:14:30	So, this means that on switch 3,
0:14:33	if I actually had two separate routes that
0:14:46	or anything greater than that,
0:14:53	the RIP process would not be able to
0:14:57	At least from a filtering point of
0:15:00	Because the standard access list is
0:15:06	of the route, it's not matching on the prefix length.
0:15:12	So, we'll see when we do route
0:15:16	the preferred methodology would be to
0:15:23	because the prefix list is matching on both
0:15:29	Whereas the standard access list can only match
0:15:41	So now, on switch 3, we will match the prefix.
0:15:45	We'll say, Access List 1 is for the route 155.10.9.0.
0:15:55	Then, under the RIP process,
0:15:59	For the routes matched in Access List 1.
0:16:02	I'll do this outbound.
0:16:05	And now, I need to figure out what
0:16:09	Now, on the other end of the link
0:16:16	for 155.10.9.0,
0:16:20	switch 1 is currently receiving this with a metric value of 1.
0:16:25	So, if I want is installed as 14 in switch 1's table,
0:16:30	then, it should mean on switch 3 that
0:16:40	It should be offset to 30.
0:16:43	So, assuming that we take the previous
0:16:47	if that is true, then, we should see
0:16:50	14 in switch 1's table.
0:16:56	Now, notice I didn't referenced an interface, this means
0:17:02	It's gonna be offset by an additional 13.
0:17:04	So now, if we look at switch 1 and look at the result,
0:17:08	now, the metric is 14.
0:17:11	Which then in turn means that on router 3 or 6 is 15.
0:17:22	So, both 3 and 6, they're saying this is a metric of 15.
0:17:26	And if we go one hop beyond them, if we go to
0:17:36	it says the metric is inaccessible.
0:17:39	So, right now, this prefix is aging out of the table.
0:17:43	Once it goes and pass the flush
0:17:47	And if we actually try to send packets there,
0:17:51	we can still use the route until it is flushed out.
0:17:56	But once we go beyond that
0:18:01	then, the routes is gonna be removed.
0:18:03	Now, if we clear the routing table,
0:18:08	And then, we'll see now, router 4 no longer
0:18:18	So, this feature then essentially has dual functionality.
0:18:21	We could use it for traffic engineering,
0:18:23	but we could also use it for route filtering
0:18:26	based on the fact that a metric of 16 is

Now Viewing

CCIE R&S Advanced Technologies Class v4.5
Title:	CCIE R&S Advanced Technologies Class v4.5
Duration:	81h 42m
The CCIE Routing & Switching Advanced Technologies Class is the first step in understanding CCIE level technologies and is a companion to the Advanced Technologies Lab Workbook. Each technology you need to know for the CCIE Routing & Switching lab will be described in detail using an instructor led hands on demonstration. The class consists of over 80 hours of in depth explanations and examples.
Get instant access to our entire library!
	Sign Up
Download this Course
$299.00	Add to Cart

RIP Offset-List

Create Bookmark